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Attestation 2019 adult level 305d lactations

Publié le par Gilles Thomas (Institut de l'Elevage)
Performances et phénotypes Bovin lait
The Institut de l’Élevage (French Cattle Breeding Institute) and FCEL (French MRO umbrella organization) display every year benchmarks about the level of production of dairy cows, in order to provide to whom it may concern an objective means of comparison with other countries.

These benchmarks, corresponding to reference lactation (305 days) adjusted to adult level for each breed, are outlined in table 1.

 

Table 1 : Reference lactation (305 days) adjusted to adult level – Year 2019

Breeds

Number of 

lactations

 Milk yield

kg

Fat content

%

Protein content*

%

Prim'Holstein

1,530,356

 9,048

3.94

3.31

Montbéliarde

 422,238

 7,286

3.85

3.45

Normande

 180,062

 6,669

4.19

3.61

Abondance

 24,184

 5,619

3.61

3.44

Brune

 16,402

 7,153

4.15

3.56

Simmental Française

 15,796

 6,554

3.99

3.52

Jersey

 9,479

5,000

5.50

4.00

Pie rouge des plains

9,413

 7,875

4.23

3.48

Taretaise

8,602

 4,561

3.67

3.39

*Protein content = nitrogen content

 

Method of calculation

 

In order to adjust to adult level, a multiplying factor depending on the parity is applied to milk and contents:

  • If the parity is 1, the multiplying factor is 1.30,
  • If the parity is 2, the multiplying factor is 1.12,
  • If the parity is 3, the multiplying factor is 1.03,
  • If the parity is 4 and over, the multiplying factor is 1.

 

NB : these benchmarks are integrated in French MR official publications and sent to ICAR.

Gilles Thomas

Service Phénotypage et Collecte des données

Institut de l’Elevage

Tel. : (33)3 23 07 46 79

 

Xavier Bourrigan

Service Phénotypage et Collecte des données

Institut de l’Elevage

Tel. : (33)2 99 14 86 25